Early Access Articles

Early Access articles are made available in advance of the final electronic or print versions. Early Access articles are peer reviewed but may not be fully edited. They are fully citable from the moment they appear in IEEE Xplore.

This paper accounts for gamma-ray and neutron heating of an optical fiber/capillary tube temperature sensor by including current sources in the fiber and capillary tube in the electrical analogue of the capillary tube/fiber sensor system. The resulting model is examined to determine the conditions for which gammaray and neutron heating of the capillary tube/fiber sensor system is a significant int...
View full abstract»

International Collaboration has become increasingly frequent in fusion research. It improves the quality and efficiency of the research in EAST facility. The traditional face-to-face collaborative way has been proved inadequate in current situation. The remote participation system for EAST Tokamak (EAST RPS) will play an important role in EAST operation experiment. Data handling for remote access ...
View full abstract»

Multiple-cell upsets (MCUs) in SRAM-based FPGAs from three different technology nodes are recorded from single particle interactions with 20 to 52 MeV electrons. Indirect ionization events associated with an electronuclear reaction are shown to be the cause of the MCUs. As has been observed with other ionizing particles such as heavy ions and neutrons, the electron upset cross section per bit is s...
View full abstract»

CEASE RR is a new sensor designed for anomaly attribution due to the space radiation environment. It does this using two solid-state particle telescopes that have been designed to measure proton and electron fluxes that are the drivers for 3 of the 4 primary space environment effects (event total dose, deep-dielectric charging, and single event effects). These telescopes are integrated into a comp...
View full abstract»

Jupiter possesses the harshest trapped radiation environment in the solar system. Models of the Jovian trapped radiation environment are a pre-requisite for planning missions to this extreme environment. The high energy (>0.1 MeV for electrons and >1 MeV/nucleon for protons and heavier ions) particle environment drives the shielding and microelectronic parts design for a spacecraft. ...
View full abstract»

P-channel CCDs have been shown to display improved tolerance to radiation-induced charge transfer inefficiency (CTI) when compared to n-channel CCDs. However, the defect distribution formed during irradiation is expected to be temperature dependent due to the differences in lattice energy caused by a temperature change. This has been tested through defect analysis of two p-channel e2v CCD204 devic...
View full abstract»

Electronic devices on the Van Allen Probes mission have experienced more than a thousand Single Event Effects (SEE) during the 4.5 years of transit through the inner and outer Earth trapped radiation belts. The majority of these SEE have been due to trapped protons determined by the orbit timing and the dose rate response of the Engineering Radiation Monitor (ERM). Fault tolerant systems engineeri...
View full abstract»

Radiation-hard optical links are the backbone of read-out systems in high-energy physics experiments at CERN. The optical components must withstand large doses of radiation and strong magnetic fields and provide high data rates. Radiation hardness is one of the requirements that becomes more demanding with every new generation of high-energy physics experiment. Previous studies have shown that VCS...
View full abstract»

This study reports a novel application of silicon photomultipliers (SiPMs) for directly counting keV-range electrons and protons. Current instruments for measuring low-energy ions and neutral atoms (<30 keV) in space regularly use secondary electron multipliers, which pose practical limitations in small volume and low budget applications. A thin dead-layer SiPM, originally developed for vac...
View full abstract»

Limited-angle problems encountered in computed tomography (CT) often necessitate image reconstruction using projection data from a particular angle range. To solve this severely ill-posed problem, prior information is utilized to constrain the problem. As a special case of compressed sensing, a total variation (TV) transform with an l1-norm image gradient is utilized in most cases, and manages to ...
View full abstract»

The paper considers the converter materials having different mean thickness, isomeric chemical shift and various cationic surroundings of the iron atoms in the converter matrix for resonance detectors. The influence of the converter material parameters on the characteristics of the Mössbauer spectra taken by the resonance detector has been estimated. The value of resonance absorption, exper...
View full abstract»

Single-event transient (SET) responses are compared for Floating-Body Contact (FB), T-gate Body-Contact (TB) and Tunnel-Diode Body-Contact (TDBC) SOI MOSFETs. The influence of three body-contact schemes on SET sensitivity is examined via irradiations as functions of position, bias voltage, and device size. The mechanisms of SET in SOI devices are discussed. Although both TB and TDBC schemes suppre...
View full abstract»

This paper investigates the radiation tolerance of 28nm bulk n-and pMOSFETs up to 1Grad of total ionizing dose (TID). The radiation effects on this commercial 28nm bulk CMOS process demonstrate a strong geometry dependence as a result of the complex interplay of oxide and interface charge trapping relevant to the gate-related dielectrics and the shallow trench isolation. The narrowest/longest-chan...
View full abstract»

The response of silicon-based MEMS resonators to proton irradiation is determined by the combined effects of displacement damage and total-ionizing-dose. Displacement damage (DD) can lead to carrier removal, which tends to decrease the carrier concentration, and TID leads to dopant activation and/or surface charging effects, which tend to increase the carrier con-centration. These competing effect...
View full abstract»

The energy-dependent neutron flux incident on surveillance capsule assemblies (SCAs) installed at the outer surface of the core barrel in two pressurized water reactors - Chashma Nuclear Power Plants Unit-1 &-2 was evaluated. This safety study was made for the reactor pressure vessel (RPV) surveillance program to determine the fast-neutron-induced radiation embrittlement of vessel materials...
View full abstract»

We investigated the temperature dependences (TD) in the range of 290-423 K for the Hall constant RH and the Hall carrier mobility μn (σRH) in semi-insulating Cd0.9Zn0.1Te:In (CZT) crystals. As-grown CZT material has non-equilibrium distributions of native and impurity-related defects. Thus, before taking any measurements, the samples were kept inside the test chamber in the dark at 4...
View full abstract»

The contribution of elastic scattering to SEU by low energy protons is usually considered negligible. This paper develops the formulas needed for calculating the cross section (CS) to create Si recoils of the elastic scattering of protons, muons, and electrons in silicon devices. The results are used to calculate SEU CS. This is compared with existing experimental results and with Monte Carlo calc...
View full abstract»

This paper reports a feasibility study, performed by numerical simulation with MCNPX PoliMi v2.0, for plutonium quantitative assessment in radioactive waste packages by passive neutron coincidence counting with plastic scintillators. Owing to their low cost and good detection efficiency for fast neutrons, plastic scintillators could indeed constitute a good alternative to 3He proportional counters...
View full abstract»

A 3.9 ps time-interval RMS precision and 277 M events/second measurement throughput time-to-digital converter (TDC) is implemented in a Xilinx Kintex-7 field programmable gate array (FPGA). Unlike previous work, the TDC is achieved with a multi-chain tapped delay line (TDL) followed by an ones counter encoder. The four normal TDLs merged together make the TDC bins very small, so that the time prec...
View full abstract»

The ITER Neutral Beam Test Facility currently under construction at Padova, Italy, consists of two experiments: SPIDER to test the ITER-size ion source and MITICA to test the full ITER Neutral Beam Injector. While the former represents an intermediate step, also finalized to the ITER Diagnostic Neutral Beam, the latter will represent the final design and implementation of the full prototype of the...
View full abstract»

High electric field stress (HEFS) and annealing effects on irradiated (by 60Co γ-ray) vertical double-diffused MOSFETs (VDMOSFETs) are investigated. The behaviors of the oxide trapped charges and interface traps during the stress are measured by using a simplified midgap (MG) technique. Rapid recovery of the threshold voltage (Vth) for the irradiated VDMOSFET is observed under a high positi...
View full abstract»

The laser-induced current technique has been successful used to reconstruct the spatial profile of the electric field along the thickness of a set of CdZnTe spectroscopic X-ray detectors. Current transient profiles for electrons at different applied voltages have been analyzed by means of a minimization procedure demonstrating its applicability to samples with thickness ranging from 250 μm ...
View full abstract»

Nuclear power plants (NPPs) are composed of very large complex systems. During transient occurrences in nuclear power plants, operators determine the transients of the NPP through information acquired from various measuring instruments. A support vector machine (SVM) based on serial and parallel connections, termed as a multi-connected SVM, is introduced in this paper. The loss of coolant accident...
View full abstract»

This paper represents an SEU hardened scheme for hardening circuits mapped onto FPGAs. The proposed scheme calculates failure probability based on critical FPGA configuration bits and performs placement and routing to reduce the failure probability as much as possible. If the calculated failure probability is still greater than the required failure rate, partial TMR is implemented to reduce critic...
View full abstract»

Aims & Scope

IEEE Transactions on Nuclear Science focuses on all aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.